Improved cut-off tor brick-machines



, To all whom it 'may concern:

'ing to that portion ofthe machinery in which the sev- `aftersevering a brick, are jarred olf when the knife with a curved side-gi1ide, whose lower edge is provided ldttcd me YRUS CHAMBERS;v JR., OF PHILADELPHIA, PENNSYLVANIA Letters` Pctcnt'liro. 97,356,11cted November 30, N369, a'ntedctcd November 20, 1869.

IMPROVED CUT-OFF FOR BRICK-MACHINES.

The Schedule referred to in these Letters Patent and making part of the same.

Be it known that I, OYRUs CHAMBERS, J r., of the city and county of Philadelphia, in the State'of Penn- Sylvania, have invented certain new and useful Im? prov'ements in that class of brick-making machines in which the clay is pressed ont in a continuous bar, and cut on by a revolving knife, .said improvements relaterance ofthe brick from the bar is effected; and I do hereby declare the following to be a full and correct descriptionof the same, reference being had to the accompanying drawings, in which- Figure 1 represents an inside elevationof my improvements;

Figure 2 represents a'veltical section; and

Figure 3, a horizontal section of the same.

The same letter designates the same partwherever it occurs.

The nature of my invention consists First, in so constructing the movable frame' or stir-i rup-guided through which the bar of clay passes, and which also serves as a guide for the severing-knife, that any portions of clay that may cling to the knife,

again descends, and caught in a box provided for that purpose; Second, in removing the bearing of the corner opposite to the point where the severing-knife first comes in contact with the clay-bar, and providing a large opening 4behind it to facilitate cleansing without interfering with the clay-bar, thus remedying the diliculty formerly experienced'in the clogging of this corner, and the consequent tearing of the bar;

Third, in making the upper edge pcf the bottomplate, over which the clay-bar passes, and in the direction of its approach, a sharp edge, in combination with a knife, which projects beyond andbelow the line ot ,the sharpened edge ofthe bottom plate, with a clearance between to prevent clogging, so that all the inequalities of the bar below the plane of its bottom are cut oi'f, the angle of the slit is completed, and the angle ofthe bar shaved smoothly,

To enable others to make and use my invention, I will describe its construction and operation.

The movable frame or stirrup-guide is constructed in two portions, and bolted togethenas shown in gs.

v equalities of the clay-bar 1 and 3, with a space left between them, indicated by the red lines c f in figs. 2 and 3, for the passage of the severing-knife. v

The 'gnides'G G for the severing-knife, are so arranged sloping from each other'{see figs. 2 and 3) and toward the descending knife, as G, g. 1, in combination with the edge E E', and the hok K L, fig. 2, that any clinging particles of clay are knocked from the knife in its descent, caught in the box KL, and prevented from falling on the moving claybeneath.

The close bearing of the corner B, against which the bar is forced when heilig severed, is removed by elevating the plate N abovethe plate M, as shown in iig. 1, and constructing a large opening, O, for clear-V ing out in the rear of the corner, so that the corner cannot become clo ed up, nor thebar torn.

The upper edge A C ofthe bottom plate M is mad sharp, as shown at the point h., fig. 2, so that any inbelow the plane of the base are shaved off. i Y

The guide-plate N is constructed with the projecting part curved, in order that the clay-bar may beguided by it to its proper place, and with a knife, s, on

its lower edge projecting'beyond and below the edge hof the plate M, fig. 2, leaving a clear space between to prevent clogging, to cnt oi any portion of the bar that mayr project beyond the angle lof the slit.

' Having thus fully described my invention,

What I claim, and desire to secure by Letters 1. The-box for catching the particles of dirt from thesevering-knife, when used incombination with the The above specification of my said'invention, signed and witnessed at Philadelphia, this 9th day of March,

A. D. 1869. GYRUS CHAMBERS, JR.

`Witnesses:

J AMES P. MGCLURE, W. P. Davis, 

